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Re: the best spark gap?

Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>

Hi Drake,

I wouldn't use the carbide tungsten bits in a static gap application. Been there, done that. Simple copper tubing is far better at thermal transfer and will remain cooler providing more energy to the coil (better sparks). I really like a RQ sucker gap. I simply use a squirrel cage fan (120 Vac powered) and suck in the air through the RQ/TCBOR copper pipe in a pvc arrangement. Works great and tubing stays cool for long runs. The amount of airflow is important. Too little air flow and the sparks will start out great and quickly diminish. The tubing will be hot. Too much airflow and the sparks can be erratic. Just right and "long sparks, slightly warm tubing (but not hot)".

Take care,

Tesla list wrote:

Original poster: "Drake Schutt" <drake89@xxxxxxxxx>

Hey all,

Assuming a 12kv/120ma NST bank and a .03 uf 35 KV cap, is there any sort of consensus as to what the most efficient sort of gap would be for this (medium-ish?) configuration? There's sucker gaps, blower gaps, single static gaps, multi static gaps, rotary gaps, RQ gaps, etc. I was thinking about a RQ style gap with a vacuum or leaf blower for quenching or maybe using some tungsten carbide dremel bits also air quenched. Any ideas?